asteroza + quantum   68

Researchers measure near-perfect performance in low-cost semiconductors
quantum dot efficiency is extremely high, competes with single crystal conventional semiconductors
materials  science  physcs  research  technology  quantum  dot  efficiency 
april 2019 by asteroza
Quantum Physicists Found a New, Safer Way to Navigate | WIRED
Quantum magnetometer showing strength and direction, mapped to know earth mag anomalies, as well as a quantum laser rate gyro that requires no drift resets.
quantum  sensor  navigation  magnetometer  earth  anomaly  field  mapping  laser  rate  gyro  diffraction  pattern  hardware  electronics  devices  research  technology 
november 2018 by asteroza
Massive Dirac fermions in a ferromagnetic kagome metal | Nature
kagome lattices may allow room temperature superconductors by employing topological effects with quantum hall effects.
materials  science  research  technology  kagome  crystal  lattice  superconductor  quantum  hall  effect 
march 2018 by asteroza
Round 1 Submissions - Post-Quantum Cryptography | CSRC
Round 1 candidates for the new NIST post-quantum cryptographic algorithm contest
NIST  contest  post-quantum  post  quantum  encryption  cryptography  algorithm  research 
december 2017 by asteroza
QUANTUM Inc.
The ad agency Hokuhodo is now running a hybrid startup incubator, aiming to bridge the gulf between startups and established big business. A introduction/management agency of sorts, different from the typical startup ecosystem where startups try to actively bypass the establishment.
japan  startup  intermediary  agency  incubator  quantum  hokuhodo 
july 2017 by asteroza
5.6 μm quantum cascade lasers based on a two-material active region composition ...
new quantum cascade,lasers, using a more manufacturable 2 material composition rather than a more exotic 5 material composition. IR tunable, runs at room temperatures, but pulsed though (but looks amenable to continuous wave operation)
quantum  cascade  laser  IR  physics  materials  science  manufacturing  research  technology  Delicious 
october 2016 by asteroza
Phys. Rev. A 94, 022315 (2016) - Quantum enigma machine: Experimentally demonstr...
This appears to be a shannon limit breaker, in that the key is shorter than the message yet is still unbreakable...
shannon  limit  quantum  key  encryption  experiement  science  research  technology  Delicious 
september 2016 by asteroza
Hyperion Project
Some sort of LCD shutter or modulated quantum well retroreflector to reduce transmission power requirements for one side of the link?
laser  freespace  free  space  optical  communication  lasercomm  UAV  drone  semipassive  reflector  optics  research  technology  hologram  lens  MQW  modulated  quantum  well  retroreflector  reflector  Delicious 
march 2016 by asteroza
Research Blog: When can Quantum Annealing win?
Ohhh boy. So that NSA move towards quantum resistant crypto is prescient...
quantum  computer  D-Wave  google  computing  Delicious 
december 2015 by asteroza
Long-range energy transport in single supramolecular nanofibres at room temperature : Nature : Nature Publishing Group
Basically triangularly plate shaped molecules stacked in a rising triple helix pattern can create quantum coherence, transmitting energy along the supramoelcular fiber.
supramolecular  nanofiber  quantum  coherence  physics  materials  science  research  technology  Delicious 
august 2015 by asteroza
Quantum Afterburner: Improving the Efficiency of an Ideal Heat Engine
So, pumping a laser into a rocket chamber could yield more energy, in the form of additional photons.
quantum  afterburner  physics  research  technology  Delicious 
may 2015 by asteroza
Magnetic quantum ratchet effect in graphene : Nature Nanotechnology : Nature Publishing Group
Interesting research, basically making a magnetic quantum ratchet out of graphene, effectively making an AC/DC rectifier. But, they used a 7 tesla mag field and a 3.34THz AC input (between IR and microwave), so not entirely practical. But, infrared nanoantennas have a need for rectifying their AC output and they are currently manufactured in the IR range, so if you can somehow provide the necessary mag field, that might be the trick to make it work...
technology  physics  rectifier  nanoantenna  DC  IR  ratchet  research  science  AC  terahertz  materials  effect  graphene  quantum  magnetic  nanotechnology  Delicious 
september 2013 by asteroza
RIKEN | Press Release | 2012 | A New Route to Dissipationless Electronics
Interesting work on a actual magnetic topological insulator. In theory this should allow reductions in line transmission losses. But this needs magnetic materials, and currently requires cryogenic cooling, so on the face of it, it isn't much better than current high temperature superconductors. Might be more applicable to chip scale stuff, especially if they can get the working temperature up.
dirac  fermion  ferromagnetism  magnetic  topological  insulator  quantum  anomalous  hall  effect  materials  science  research  technology  power  transmission  energy  electricity  current  Delicious 
august 2012 by asteroza
http://arxiv.org/PS_cache/arxiv/pdf/1005/1005.1750v1.pdf
A quantum encryption idea utilizing the secure citadel concept to force the decryption to occur at a specific location.
quantum  cryptography  citadel  secure  location  position  geolocation  security  protocol  network  data  key  exchange  filetype:pdf  media:document  Delicious 
august 2010 by asteroza
Fibreless fibre optics developed by US Air Force • The Register
This would be an interesting alternative in bandwidth congested cities as an alternative to trenching fiber, as you could do a laser mesh network via rooftops. The adaptive optics can overcome the smog/inversion layer issues and maintain pointing accuracy.
USAF  air  force  freespace  adaptive  optics  laser  communication  transmission  technology  research  network  quantum  encryption  wireless  high  bandwidth  Delicious 
november 2009 by asteroza

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